Adjustable piano seat or bench.



No. 843,584. PATENTED FEB. 12, 1907.

4 J.'P..GLARK. ADJUSTABLE PIANO SEAT 0R BENCH.

APPLIOATION FILED OUT. 5, 1905.

I/VVEIVTOR ATTUHIVEK JAMES PATRICK CLARK, OF CHICAGO, ILLINOIS.-

ADJUSTABLE PIANO SEAT R BENCH- Specification of Letters Patent. I

Patented Feb. 12, 1907.

Application filed October 5. 1905- Serial No. 281,479.

To all whom, at may concern:

. if Be it known that 1, JAMES PATRIQK CLARK,

a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and Improved Adjustable Piano Seat or Bench, of which. the

following is a specification.

Thisinvention relates to an adjustabl bench for pianos or organs. 7

The object of the invention is to provide a bench having a supplemental movable top which can readily be raised and lowered.

The invention consists of the novel features of construction hereinafter described, pointed out in the claims, and shown in the accompanying drawings, in which- Figure 1 is a perspective view of my bench. Fig. 2 is a partial side elevation and a partial longitudinal section. Fig. ,3 is a section on the line 3 3 of Fig. 2, showing an inverted plan view of the bench-top. Fig. 4 is a detail perspective view of the rack-bar. 5is a detail view of a casing in which the rack-bar works.

In these drawings,-A represents a suitable bench of any size and design. A metal casing B has its upper portion formed cylindrically and threaded, as shown at B. Two of these casings B are employed, one adjacent each end of the bench A, and the cylindrically, threaded portion is passed upwardly through the top of the bench A and is held in place by a countersunk nut B Each casing B has a lateral extension B and, as shown in the drawings, the casing B and extension B have square bores therein. The outer end of the extension B is closed by the perforated plate B A lever O is centrally pivoted beneath the bench A and midway the ends of the lever. On the under side of the top of the bench A are secured guide-brackets C in alinement with the extensions B and the pivot-point of the lever C. Slightly-angled rods D are pivoted at their inner ends .to the lever C and on opposite sides of the pivotal point of the said lever, and these rods work through the brackets O and through the perforated plates B and extend one each into .the extensions B of the casings B. Within the casings B rods D, carrying bolt portions D and springs D are arranged in the extensions and bear upon the said bolts. A

supplemental table-top E is provided, and a metal plate- E is secured transversely upon the under side of the said top adjacent each end thereof, and each of the plates Ev carries a depending 'rack bar E These rack-bars extend into and work vertically. within the casings B, and the teeth of the rack-bars are engaged by the spring pressed bolts D. These bolts normally prevent the lowering, of the top E. The top E can be raised without manipulating the lever'C, andto lower the same it is only necessary to swing one end of the lever C out of its normal position, and both of the rods 1) will be moved inwardly toward the center of the table and the bolts D withdrawn from engagement with the rack-bars E and the top can then be lowered the desired distance Upon releasing the lever 0 the springs D will return the lever, rods D, and bolts D to their normal position.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1 In a device of the kind described, a bench, a supplemental top, casings, threaded at their upper'ends into end portions of the bench, and arranged on the line ofthe major axis of the bench, said casings having laterally-extending casings, metal plates carried by the under side of the supplemental top,- depending rack-bars formed integral with said plates, said bars working in the casings, and spring-actuated bolts, working in the lateral casings. Y

2. A device of the kind described, comprising a bench, casings carried thereby, said casings opening upwardly through the top of the bench, lateral extensions carried by the casings, a supplemental top, rack-bars carried by the top and working in the casin s, spring-pressed bolts in the extensions of t e casings adapted to engage the rack-bars, and means for simultaneously disengaging the said bolts.

JAMES PATRICK CLARK. Witnesses: I

EMIL KLEINKE, PATRICK HENNESSY. 

